System and method for fast and accurate detection of SMS spam numbers via monitoring grey phone space
US9357362B2 · kind B2 · utility
6Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2014 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | May 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/654
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for identifying short message service (SMS) spammers identifies senders as spammers by determining that the senders are sending SMS messages to devices included in a grey phone space. Devices in the grey phone space are identified using various methods including an analysis of call detail records. A grey ratio for a sender is determined as a ratio of messages sent to grey phone numbers by the sender to messages sent to all phone numbers by the sender. A sender is identified based on a difference between the grey ratio for the sender and a second grey ratio being above a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.